CA1249202A - Load sensing circuit of load responsive direction control valve - Google Patents
Load sensing circuit of load responsive direction control valveInfo
- Publication number
- CA1249202A CA1249202A CA000500048A CA500048A CA1249202A CA 1249202 A CA1249202 A CA 1249202A CA 000500048 A CA000500048 A CA 000500048A CA 500048 A CA500048 A CA 500048A CA 1249202 A CA1249202 A CA 1249202A
- Authority
- CA
- Canada
- Prior art keywords
- load
- control
- positive
- fluid
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/044—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out"
- F15B11/0445—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the return line, i.e. "meter out" with counterbalance valves, e.g. to prevent overrunning or for braking
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
- F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
- F15B2211/3051—Cross-check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
- F15B2211/3053—In combination with a pressure compensating valve
- F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/605—Load sensing circuits
- F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
- F15B2211/6057—Load sensing circuits having valve means between output member and the load sensing circuit using directional control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/76—Control of force or torque of the output member
- F15B2211/761—Control of a negative load, i.e. of a load generating hydraulic energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87169—Supply and exhaust
- Y10T137/87177—With bypass
- Y10T137/87185—Controlled by supply or exhaust valve
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US707,351 | 1985-03-01 | ||
US06/707,351 US4610194A (en) | 1985-03-01 | 1985-03-01 | Load sensing circuit of load responsive direction control valve |
US85/00864 | 1985-05-13 | ||
PCT/US1985/000864 WO1986005245A1 (en) | 1985-03-01 | 1985-05-13 | Load sensing circuit of load responsive direction control valve |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1249202A true CA1249202A (en) | 1989-01-24 |
Family
ID=24841354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000500048A Expired CA1249202A (en) | 1985-03-01 | 1986-01-22 | Load sensing circuit of load responsive direction control valve |
Country Status (6)
Country | Link |
---|---|
US (1) | US4610194A (ja) |
EP (1) | EP0224478B1 (ja) |
JP (1) | JPH06100204B2 (ja) |
CA (1) | CA1249202A (ja) |
DE (1) | DE3586992T2 (ja) |
WO (1) | WO1986005245A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4665801A (en) * | 1986-07-21 | 1987-05-19 | Caterpillar Inc. | Compensated fluid flow control valve |
US4679492A (en) * | 1986-07-21 | 1987-07-14 | Caterpillar Inc. | Compensated fluid flow control valve |
US4688470A (en) * | 1986-07-21 | 1987-08-25 | Caterpillar Inc. | Compensated fluid flow control valve |
US4747335A (en) | 1986-12-22 | 1988-05-31 | Caterpillar Inc. | Load sensing circuit of load compensated direction control valve |
US4694731A (en) * | 1986-12-22 | 1987-09-22 | Caterpillar Inc. | Load compensated valve |
ES2004356A6 (es) * | 1986-12-26 | 1989-01-01 | Hiac Valman S A | Distribuidor para cilindros hidraulicos |
US4793238A (en) * | 1987-07-01 | 1988-12-27 | Caterpillar Inc. | Control signal blocking direction control valve in load-sensing circuit |
US4799420A (en) * | 1987-08-27 | 1989-01-24 | Caterpillar Inc. | Load responsive control system adapted to use of negative load pressure in operation of system controls |
FR2672944A1 (fr) * | 1991-02-15 | 1992-08-21 | Bennes Marrel | Distributeur proportionnel et ensemble de commande d'une pluralite de recepteurs hydrauliques comportant pour chaque recepteur un tel distributeur. |
WO1993000515A1 (en) * | 1991-06-20 | 1993-01-07 | Caterpillar Inc. | Exhaust pressurizing circuit including flow amplification |
US5481874A (en) * | 1991-06-20 | 1996-01-09 | Caterpillar Inc. | Exhaust pressurizing circuit including flow amplification |
DE19537493C1 (de) * | 1995-09-25 | 1996-12-19 | Siemens Ag | Elektro-pneumatischer Stellungsregler |
DE19635368C1 (de) * | 1996-08-21 | 1997-12-04 | Siemens Ag | Elektro-pneumatischer Stellungsregler |
EP2891806A1 (en) * | 2014-01-03 | 2015-07-08 | Danfoss Power Solutions Aps | A hydraulic valve arrangement |
CN107002295B (zh) | 2014-07-16 | 2020-03-06 | 尤尼弗瑞克斯 I 有限责任公司 | 具有改进的收缩率和强度的无机纤维 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3455210A (en) * | 1966-10-26 | 1969-07-15 | Eaton Yale & Towne | Adjustable,metered,directional flow control arrangement |
USRE29329E (en) * | 1974-05-06 | 1977-08-02 | Sperry Rand Limited | Hydraulic systems |
US4180098A (en) * | 1976-02-05 | 1979-12-25 | Tadeusz Budzich | Load responsive fluid control valve |
US3991571A (en) * | 1976-03-15 | 1976-11-16 | Caterpillar Tractor Co. | Fluid system of a work vehicle having fluid combining means and signal combining means |
US4154261A (en) * | 1977-07-07 | 1979-05-15 | Tadeusz Budzich | Pressure sensing passages of load responsive control valves |
US4147034A (en) * | 1978-04-19 | 1979-04-03 | Caterpillar Tractor Co. | Hydraulic system with priority control |
US4362087A (en) * | 1981-03-26 | 1982-12-07 | Tadeusz Budzich | Fully compensated fluid control valve |
-
1985
- 1985-03-01 US US06/707,351 patent/US4610194A/en not_active Expired - Fee Related
- 1985-05-13 DE DE19853586992 patent/DE3586992T2/de not_active Expired - Fee Related
- 1985-05-13 WO PCT/US1985/000864 patent/WO1986005245A1/en active IP Right Grant
- 1985-05-13 EP EP19850902784 patent/EP0224478B1/en not_active Expired - Lifetime
- 1985-05-13 JP JP50229685A patent/JPH06100204B2/ja not_active Expired - Lifetime
-
1986
- 1986-01-22 CA CA000500048A patent/CA1249202A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE3586992T2 (de) | 1993-08-05 |
DE3586992D1 (de) | 1993-02-25 |
US4610194A (en) | 1986-09-09 |
JPH06100204B2 (ja) | 1994-12-12 |
WO1986005245A1 (en) | 1986-09-12 |
EP0224478A4 (en) | 1990-01-08 |
JPS62501983A (ja) | 1987-08-06 |
EP0224478A1 (en) | 1987-06-10 |
EP0224478B1 (en) | 1993-01-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |